argument parsing refactoring round3
David Bremner
david at tethera.net
Tue Apr 7 12:30:38 PDT 2015
I think a dealt with all of Mark's comments, even "notmuch help
--help".
I ended up creating a new function for the places where we want to
process _only_ the shared options (config, setup, and help)
diff --git a/notmuch-client.h b/notmuch-client.h
index ab0d188..78680aa 100644
--- a/notmuch-client.h
+++ b/notmuch-client.h
@@ -467,5 +467,7 @@ notmuch_database_dump (notmuch_database_t *notmuch,
#include "command-line-arguments.h"
extern const notmuch_opt_desc_t notmuch_shared_options [];
-void notmuch_process_shared_options (const char* help_name);
+void notmuch_process_shared_options (const char* subcommand_name);
+int notmuch_minimal_options (const char* subcommand_name,
+ int argc, char **argv);
#endif
diff --git a/notmuch-config.c b/notmuch-config.c
index f2cd6a8..9348278 100644
--- a/notmuch-config.c
+++ b/notmuch-config.c
@@ -874,17 +874,10 @@ notmuch_config_command (notmuch_config_t *config, int argc, char *argv[])
int ret;
int opt_index;
- notmuch_opt_desc_t options[] = {
- { NOTMUCH_OPT_INHERIT, (void *) ¬much_shared_options, NULL, 0, 0 },
- { 0, 0, 0, 0, 0 }
- };
-
- opt_index = parse_arguments (argc, argv, options, 1);
+ opt_index = notmuch_minimal_options ("config", argc, argv);
if (opt_index < 0)
return EXIT_FAILURE;
- notmuch_process_shared_options (argv[0]);
-
/* skip at least subcommand argument */
argc-= opt_index;
argv+= opt_index;
diff --git a/notmuch-search.c b/notmuch-search.c
index 994ae58..b89a17e 100644
--- a/notmuch-search.c
+++ b/notmuch-search.c
@@ -740,6 +740,7 @@ notmuch_address_command (notmuch_config_t *config, int argc, char *argv[])
{ "false", NOTMUCH_EXCLUDE_FALSE },
{ 0, 0 } } },
{ NOTMUCH_OPT_INHERIT, (void *) &common_options, NULL, 0, 0 },
+ { NOTMUCH_OPT_INHERIT, (void *) ¬much_shared_options, NULL, 0, 0 },
{ 0, 0, 0, 0, 0 }
};
@@ -747,6 +748,8 @@ notmuch_address_command (notmuch_config_t *config, int argc, char *argv[])
if (opt_index < 0)
return EXIT_FAILURE;
+ notmuch_process_shared_options (argv[0]);
+
if (! (ctx->output & (OUTPUT_SENDER | OUTPUT_RECIPIENTS)))
ctx->output |= OUTPUT_SENDER;
diff --git a/notmuch-setup.c b/notmuch-setup.c
index 21d074a..7dd5822 100644
--- a/notmuch-setup.c
+++ b/notmuch-setup.c
@@ -133,7 +133,6 @@ notmuch_setup_command (notmuch_config_t *config,
size_t new_tags_len;
const char **search_exclude_tags;
size_t search_exclude_tags_len;
- int opt_index;
#define prompt(format, ...) \
do { \
@@ -146,18 +145,9 @@ notmuch_setup_command (notmuch_config_t *config,
chomp_newline (response); \
} while (0)
- notmuch_opt_desc_t options[] = {
- { NOTMUCH_OPT_INHERIT, (void *) ¬much_shared_options, NULL, 0, 0 },
- { 0, 0, 0, 0, 0 }
- };
-
- opt_index = parse_arguments (argc, argv, options, 1);
- if (opt_index < 0)
+ if (notmuch_minimal_options ("setup", argc, argv) < 0)
return EXIT_FAILURE;
- /* We can't use argv here as it is sometimes NULL */
- notmuch_process_shared_options ("setup");
-
if (notmuch_config_is_new (config))
welcome_message_pre_setup ();
diff --git a/notmuch.c b/notmuch.c
index c7f8c8f..2198b73 100644
--- a/notmuch.c
+++ b/notmuch.c
@@ -59,18 +59,40 @@ const notmuch_opt_desc_t notmuch_shared_options [] = {
* notmuch_process_shared_options (subcommand_name);
*/
void
-notmuch_process_shared_options (const char *help_name) {
+notmuch_process_shared_options (const char *subcommand_name) {
if (print_version) {
printf ("notmuch " STRINGIFY(NOTMUCH_VERSION) "\n");
exit (EXIT_SUCCESS);
}
if (print_help) {
- int ret = _help_for (help_name);
+ int ret = _help_for (subcommand_name);
exit (ret);
}
}
+/* This is suitable for subcommands that do not actually open the
+ * database.
+ */
+int notmuch_minimal_options (const char *subcommand_name,
+ int argc, char **argv)
+{
+ int opt_index;
+
+ notmuch_opt_desc_t options[] = {
+ { NOTMUCH_OPT_INHERIT, (void *) ¬much_shared_options, NULL, 0, 0 },
+ { 0, 0, 0, 0, 0 }
+ };
+
+ opt_index = parse_arguments (argc, argv, options, 1);
+
+ if (opt_index < 0)
+ return -1;
+
+ /* We can't use argv here as it is sometimes NULL */
+ notmuch_process_shared_options (subcommand_name);
+ return opt_index;
+}
static command_t commands[] = {
{ NULL, notmuch_command, TRUE,
@@ -250,7 +272,15 @@ _help_for (const char *topic_name)
static int
notmuch_help_command (unused (notmuch_config_t * config), int argc, char *argv[])
{
- argc--; argv++; /* Ignore "help" */
+ int opt_index;
+
+ opt_index = notmuch_minimal_options ("help", argc, argv);
+ if (opt_index < 0)
+ return EXIT_FAILURE;
+
+ /* skip at least subcommand argument */
+ argc-= opt_index;
+ argv+= opt_index;
if (argc == 0) {
return _help_for (NULL);
diff --git a/test/random-corpus.c b/test/random-corpus.c
index 6c467bb..b377eb4 100644
--- a/test/random-corpus.c
+++ b/test/random-corpus.c
@@ -125,6 +125,14 @@ notmuch_process_shared_options (unused (const char *dummy))
}
int
+notmuch_minimal_options (unused (const char *subcommand),
+ unused (int argc),
+ unused (char **argv))
+{
+ return 0;
+}
+
+int
main (int argc, char **argv)
{
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